Abag contains 4 red marbles, 3 white marbles, and 7 blue marbles. you pick a marble without looking. find the probability of drawing a white marble

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?